Oscillating-cylinder printing-press



4 Sheets-Sheet 1.

(No Model.)

J. T. HAWKINS. OSGILLATING CYLINDER PRINTING PRESS. No. 423.052.

Patented MRI". 11, 1890.

V I I I ...WQ a

N. PETERS. Pholulhognphar, Washington, D. C.

4 sheets-shem-I 2.

(No Model.)A

Patented Mar. 1l, 1890.

4 sheetsheez s..

(No Model.)

J. T. HAWKIN'S. OSGILLAI'ING CYLINDER PRINTING PRESS.

No. 423,052.. Patented'MRr. 11,v 1890.

NA PETERS4 FhumLilhogmplzer. washingmn, D. C.

(No Model.) 4 Sheets-Sheet 4.

J. T. HAWKINS.- OSCILLATING CYLINDER PRINTING PRESS'. No. 423,052.

Patented Mar. 1,1, 1890.

.Sui

N. PETERS. Phoxomhngmpher. wnshmgmn. D. C.

UNITED. STATES PATENT OFFICE.

JVOIIN T. IIAl/VKINS, OF TAUNTON, MASSACHUSETTS.

OSCILLATING-CYLINDER PRINTING-PRESS.

SPECIFICATION forming part of Letters Patent No. 423,052, dated March 111890.

Application filed July 8, 1886.

To all whom if may concern,.-

VBe it known that I, JOHN T. HAWKINS, of Taunton, in the county ofBristol and State of Massachusetts, have invented certain new and usefulImprovements in Oscillating-Cylinder Printing-Machines, which inventionor improvements are fully set forth and illustrated in the followingspecification and accompanying drawings.

The object of this invention is to provide a printing-machine which willprint the sheets on one side first from the roll or web, and having thusprinted an edition of some five thousand sheets will automatically feedthem through a second time and perfect them by printing them on theother side and folding them.

In many newspaper-printing offices Where the ordinary cylinder-pressesare now used, at speeds varying according to the skill of the feeder andthe capacity of the machine, the less important pages, constituting thefirst side, are printed several hours before the papers are delivered tothe carriers, the other pages being reserved for the latest. telegraphicnews and the most attractive intelligence. It is therefore desirable tohold back the printing of these pages as long as possible, so as toobtain all the latest news, and then to print them at the highestavailable speed. To hold back the printing of the entire paper untilthis time would necessitate the use of either thevery large andexpensive rotary printing-machine, using either stereotyped forms ortype-revolving cylinders, or else a number of ordinary cylinder-pressesrequiring a number :of duplicate forms and many attendants; but byrthisinvention the less important pages are first printed, whenever it isconvenient, on a double-printing oscillating-cylinder press using a fiatform, the

lsheets of paper being cnt from the rolls and fed automatically to thecylinder 'and then rewound as sheets between tapes on the second rolls,whence, when a sufficient number of sheets have been collected tocomplete the edition and the form containing the latest 4 news hasreplaced the first form, said sheets are again automatically fed to thesame impression-cylinder, perfected, delivered, and folded readyforptlie carriers or the mail. `As'thc action of the machine is entirelyau- Serial No. 207,418. (No model.)

tomatic, and not dependent on the skill of feeders, and as thereciprocating parts of the machine are counterbalanced in accordancewith my patent of August 10, 1886, No. 346,911, both sides of the sheetsare printed at a high rate of speed approaching that of the vastly moreexpensive rotary newspaper.perfecting presses now in use.

Theinvention consists of the parts and combinations of parts hereinafterdescribed, and particularly set forth in the claims.

In the accompanying drawings, Figure] is a side elevation of the machinelooking toward the folding apparatus, the crank-end feeding and deliverymechanism being shown in section through the center of the press. Fig. 2is an enlarged sectional elevation of the left-hand part of the machineshown in Fig. 1,- with the upper part of the side frame removed, so asto more plainly show the feeding and foldingmechanisms. Fig. 3 is a planof the part of the machine shown in Fig. 2, with the bridge-fingers 4Iand 11G and roll of paper 25 removed for clearness. Fig. 4 is a sideelevation of 'the crank-end feeding and folding mechanism looking at themachine from th folder side.

In said drawings the several parts are in- 'dicated by numbers, asfollows:

The numbers 1 and 2 indicate the side frames, and 3 indicates: the rib,of the machine, on which the rollers 4, carrying the bed 5, run. The bedmay be driven in any one of the well-known ways; but I prefer to use theequilibrated bed motion shown and claimed in my said Letters Patent.Power is applied to shaft @extending across the press and carrying thepinions 7, meshing into the large crank-gears S, running on the shaft 9,carried in bearings lO in the side frames.

The remainder of the mechanism for `imparting reciprocating motion tothe type-bed is omitted as not essential to this invention.

The lower way-shaft 11 of the machine is supported in bearings 12 inside frame 2, being driven from shaft 9 by means of the bevelgears 13and 14. Shaft 11 carri-es the cams which operate various printingmechanisms, as well as the bevelgear 15, which, through bevel-gear 16,vertical shaft 17, and bevelgears 1S and 19, actuate the upper way-shaft20, which drives the feeding, delivery, and

folding mechanisms. The cylinder 21 runs in boxes carried in the sideframes. On the end of the cylinder is secured a gear 22, which meshesinto a rack (not shown) on the side of the type-bed, and through themedium of which the cylinder is oscillated.

The upper stands 23 24 of the machine carry the feeding and deliveryapparatus. The roll of paper 25 on its core 26 is placed in .sockets inthese stands, whence the Web of paper is fed between pressure-pulleys27, fastened on shaft 28, and the cutting-gap cylinder 29. rlhe web isthen run over the cutting-'gap cylinder 29 and under the overguides 30,which are fastened to the fixed bar 31. Cylinder 29 is driven by thebevel-gear 32 on its end, meshing with gear 33 on shaft 20.

Fastened to the shaft of cylinder 29 is the spur-pinion 34, driving thespur-gear 35 on the end of the cutting-blade shaft 36. Gear 35 isfastened to shaft 36 by means of setscrews and a feather in shaft 36, onwhich it can be slid so as to take it out of mesh with pinion 34.

On shaft 36 are clamped by bolts 37 three arms 38, to which is fastenedthe cutting-blade 39, which is thus made to rotate in connection withthe cutting-gap cylinder1 29, the blade entering into the gap 40 of saidcylinder.

There are six gaps in the blade spanning the overguides 30, and a sheetWhose length is twice the circumference of cylinder 29 is thus severedfromthe web at every revolution of the cylinder 29 and blade 39, exceptin the six places mentioned. A The pressure-pulleys 27 cause the web tobe unwound from the roll 25, and also push the partially-severed webdown the incline over the bridge-fingers 41, fastened to bars 42. Whenthe leading edge of the web reaches the cylinder 21 and is about to betaken by the grippers (not shown) of cylinder 21, the tail edge is beingpartly severed by the blade 39 entering gap 40. The cylinder 21 and bed5in the meanwhile having reached one end of their stroke, and thegrippers being open, the web enters beneathand is closed upon by thegrippers. ping the leading edge of the web, then starts forward in thedirection of the travel of the paper at an accelerated speed, which,soon becoming greater than the constant speed given to the web by thecylinder 29, causes a sheet to bey completely severed from the web alongthe line already partially cut by the blade 39. Thesheet thus taken isthen printed on its irst side by forms on the bed 5. The head of thesheet is then delivered to cylinder 43 bya set of the usual sheet-lifterlingers carried in the cylinder 21 under the leading margin of thesheet.

The grippers and sheet-lifting fingers and their mechanisms are notshown, as they form no part of this invention and are clearly shown inmy application above mentioned.

The cylinder 43. mayconsist of a number of wheels fastened to shaft 44,which carries the spur-gear 45,4 meshing into cylinder-gear 22.

The cylinder 2l, grip-` to shaft 47, tend to strip the sheet from thecylinder 21 and to bend `it into contact with wheels 43. A series ofbelts 48, each carrying a gripper 49, held closed by springs 50 onspindles 51, levers 52, and rollers 53, run over sprocket-pulleys 54,fastened to shaft 55, runningin the stands 23 and 24, and oversprocketpulleys 56, running on shouldered collars 57, fastened to shaft58. Belts 48 and sprocket- Wheels 54 and 56 are driven from shaft 55,which carries a gear 59, meshing with gear 45 on shaft 44, which isdriven by cylinder-gear 22. Shaft 58 is capable of being moved in itsbearings in the standsy 23 and 24, but is held in either of its twopositions by means of a thumb-screw 60, passing through the arm 61 onthe outside of the stand 23 and tapped into the stand 23 either at 62,Fig. 4, as shown in the crank-shaft end of Fig. 1, or at 63, as shown atthe opposite end of Fig. 1 and in all the other views.

Extending between brackets 64 and 65, carried on shafts 66 and 67, are aseries of bridge-fingers 68, placed a sufficient distance below thebelts 48 to support a number of sheets and allow the passage over themof a sheet held by grippers 49. l

Secured to shaft 58 are two arms 69, carryling the shaft 70, upon whichthe chain-wheel 71 and the tape-pulleys 72 and 73 are 4fastened. Toshaft 58 are also secured a series of pressure-pulley arms 74, carryingstudson which run -pressure-pulleys 75. 'lhe object of these arms 74- isthat there may be the same amount of pressure exerted by the pulleys 75on the tape-pulleys 73 whether there are one or iifty sheets passingbetween the pulleys. Vhen the thumb-screw 60, passing through arm 61, isplaced in the tapped hole 63, the arms 69 and 74 will be in such posi-IOO will cause the sheet which it took from the cylinder 43 to bebrought into the bite of the pulleys 73 and 75. The rollers 53 ofgripperlevers 52 are caused to be opened by riding on the hubs of wheels5 4, and so take the sheets from cylinder 43. The springs 50 keep thegrippers 49 closed on the sheet, thus holding it up to the belt andtransferring it until the head of the sheet is brought into the bite ofthe pulleys 73 and 75, when the gripperrollers 53, rolling on cams-"76,projecting down from the cross-stay 77, cause the grippers to be openedand the sheet left in the bite of the pulleys 73 and 75. The grippersthen proceed on sufficiently far to clear themselves of the sheet, atwhich time the' bed, having completed its stroke in the direction itstarted on when the grippers in cylinder 21 took the sheet, reverses andcausesV the grippers 49, belts 48, pulleys 54 and 43,-and cylinder 21 toreverse and retrace their respective paths. f

\ Fastened to the upper way-shaft 20 by means of set-screw 78, andsliding on a feather 79, are a pair of bevel-gears 80 and 8l,either IIO' around chain-wheel 71.

of which can4 be throwninto gear with the bevel-gear 32, pinned to shaft83, which is supported in bearings in the bracket 34,bolt ed to stand24. On the lower end of shaft S3 is cut a worm 35, which meshes into`the worm-gear 30, secured to shaft 37, journaled inthe stands 23 and24. Shaft S7 carries the chain-pulley 848 and the tape-.pulleys S9.

Shaft is driven by means of a chain 90,

passing over chain-wheel 83 on shaft 87 and v Supported in jour* nals inthe stands 23 and 24 is a shaft 91,'carrying` pressure-pulleys 92,rollingon pulleys S9. On each end of the 'upper way-shaft 20 is pinned aspur-gear 93, meshing in with a spur-gear 94, pinned toa shaft 95, whichis'carried in brackets 9G and 97, bolted to stand 24. On shaft 95 isiixed a worm 98, nieshingin with worm-gear 99, running loose on shaftY100. In

the end of shaft 100 is a fixed friction device 101, running in thefemale part in gear 99, and whicl1,by means of thumb-screw 102, can beregulated to any desired amountof friction. The shaft 100 runs inbearings in the stands 23 and 24, and is the core upon which the papersare collected after having been printed on one side.' VThe shaft 103,running loose in stands 23 and 24, carries rolls of tape 104 and abelt-pulley`105, which is driven from beltepulley 106, secured to shaftS7, by belt 107. The tapes 10S, being thus driven from shaft 37, havethe same speed as have tapes 109, running over pulleys`73 and 39. Thetapes 108, on leaving the rolls 104, pass around the roll ofhalf-printed papers 110, which are being wound up; thence they passaround tape-pulleys 72 and between tape-pulleys 89 and pressurepulleys92,`and so to the roll 110, towhose core or shaft 100 their ends arefastened. The tapes 103and 109 are so speeded that they advance at aconstant speed but a very short distance-say one inch`- for each sheetpresented to them at the bite between pulleys 73 and 75. Vhen themachine is first started and the rst sheet reaches pulleys 73 and 75,they bite it, and the grippers 49' are opened by roller 53 passing uponcams 76. Said grippers thus clear themselves of the sheet. Vhen thegrippers 49 return, they leave the sheeththat they have just carriedforward int-o the bite of pulleys 73 and 7 5', which pulleys, movin gata very slow speed, will have advanced only a very short disV tance-sayone inch-before the grippers 49' return again with a second sheet, whichwill be delivered to pulleys 73 and 75 with its head as much behind'theleading edge of the iirst sheet as that sheet has traveled in onecomplete cycle of motion of the machine. It is thus evident thatthefirst sheet will not have passed from between 'the pulleys 73 and 75untilthere have been as many sheets superimposed upon it as thedistanceA which the tapes 10S and 109 move at each double stroke of themachine is contained an even number of times in the length of thesheet-#that is, if

the tapes 10S and 109 move one inchforward for each sheet received andthe length of the sheet be thirty-twoinches, then there will bethirty-two sheets constantly in the bite of pul leys 73 and 75. rllhesheets thus layered are carried on tapes 108 and 109 between pulleys 89and 92, whence the tapes 109 start to rethem up on the roll 110.

The object of the friction device 101 is to allow the roll 110 to have aconstant surface velocity equal to that of the tapes 109, no matterwhether the roll be small or large. When the roll is small, it makesmore turns per minute than when the roll islarge, and

"turn, Wlrile tapes 103 carry the sheets and roll consequently there ismuch more slip in the friction device 101 when the roll is large.

The screw 102 should be so adjusted as to cause the roll 110 to reel inthe sheets With a constant tension on the tapes 108.

Having printed as many sheets as the roll 110 can conveniently carry,the machine is stopped and the forms replaced by others to' print theother side. The gear 35 is now thrown out of mesh with pinion 34 bybeing slid on the feather inshaft 30, thus causing the cutting-blade v39to become inoperative and out of the way.

The side frame 111 of the folding attachment of AVthe machine is securedto the side A frame 2 and to stand 24 by the proper crossstays, one ofwhich is shown as 112, 3.

Journaled in stands `23 and 24'and in frame 111 is the folder-shaft 113,Vcarrying` a spurgear 114, through which motion Vis imparted TOO to itfrom gear 115, secured to the shaft of r cylinder 29 by a set-screw anda feather in the shaft, upon which the gear 115Acan be slid.

` During the printing of the iirst side of the paper,\as-there is no usefor the folder, the gear 115 is slid out of mesh with gear 114;` butwhen' the last form is put on and the folder is required gear 115 isthrown into mesh with gear 114 and the folder thus put in action.

i During the changing of the forms screw G0 should bctaken out of tappedhole 63, the lever 61 and shaft 58 rotated to the left, and the screw00. placed in hole 62, thus causing the arms' 09 and 74, the pulleys 72,73, and 75, the shaft 70, chain-Wheels 71, andA chain 90 lretake thepositions shown in the right of Fig. 1. i s In order to reverse themoti-on of the tapes 103 and 109,'the .screw 78 should be slacked offand the gears SOand 8l4 slid along on the key 79, so' that thebevel-gear 31 may mesh started up. The tapes 108 and 109startfor-w.`

ward at the same speed, but in the opposite IIO IZO

direction to that in which they just moved, and unwind the sheets fromthe roll 110, tapes 108 being rewound upon their rolls 104. The sheetsbeing still' layered are driven on the tapes 108 and 109 by the bite ofthe pulleys 89 92, between which they pass, and then pass-upon thebridge-fingers 116, fasgened to bars 117, (not shown in Fig. 3 forclearness,) and so toward the pulley 27 and cylinder 29. Vhen the sheetwhich was last printed reaches the bite of pulleys 27 on cylinder 29,its speed is increased, and it is quickly taken from the layer of sheetsand passed under the guides 30 and down the bridge-fingers 41, beingdriven by cylinder 29. Just before the leading edge of the first sheetreaches the cylinder 21 and is taken by the grippers the layer of sheetsresting on the fingers 116 will have been moved forward sufficient tocause the second sheet to be passed into the bite of pulleys 27 andcylinder 29, and thus separated from the sheets under it. The firstsheet, having reached the cylinder 21,'is taken by the grippers, printedon its second side, delivered to cylinder 43 by the sheet-lifteriingers, stripped from the cylinder 21 by fingers 46, and its leadingedge passed into the bite of grippers 49, which convey it along underthe belts 48 and over the bridge-ngers 68. On thev end of shaft 113 issecured a spur-gear 118, which, meshing in with gear 1 19, fastened tothe end of shaft 120, drives the foldingrollers 121 and 122 through thespur-gears 123 and 124, secured to them, respectively. Thefolding-rollers 121 and 122 are j ournaled in frame 111 and in stand 24.

J ournaled in brackets 125, attached to frame 111, are two tape-shafts126 and 127, driven from folder-rollers 121 and 122 by bevel-gears 128and 129, respectively. The tape-shafts 126 and 127 carry tape-pulleys130,

over which tapes 131 run, whence they pass around folding-roller 132,journaled in crossstays 77 and 133. Journaled in the same cross-stays isa shaft 134, carrying pulleys 135,

over which tapes 136 run, whence they pass' around folding-roller 137,journaled in crossstays 7 7 and 133, parallel to folding-roller 132.Folding-roller 137, running in contactwith roller 132, which is drivenby tapes 131, is

caused torotate and thereby drive the tapes 136, pulleys 135, and shaft134.

Secured to shaft 113 outside of stand 23 is a cam 138, in which runs aroller 139 on a stud in forked connecting-rod 140. The rod 140 embracesshaft 113, being held in position by collar 141, and at its lower end itis connected to a lever 142, secured to a shaft 143, journaled inbrackets 144 and 1,45,which are attached to stand 23.

On the end of shaft 143 is fastened a folding-knife lever 146, carryingthe folding-knife 147.

The shaft 58 projects through the stand 24, and its end carries a collar165, fastened to a shaft 166, whose other end is journaled in frame 111.The collar 165 and shaft 58'thus form a journal for the inner end ofshaft166.

Secured to shaft 113 inside of frame 111 is a cam 148, which carries aroller 149, running on a stud in the forked connecting-rod 150. Therod150 embraces shaft 113, and is connected at its other end to a lever151, fastened to shaft 166.

Pinned to shaft 166 is a folding-knife lever 152, carrying afolding-knife 153.

Journaled in stand 111 and frame 2 is a flyshaft 154, carrying a ily155, to which motion is imparted by the arm '156, to which is connecteda rod 157, whose'upper end embraces a crank-pin 158 in the gear 118.

The sheet having been printed on both sides and delivered by thegrippers 49 to a position over the bridge-fingers 68, the grippers 49are opened by the roller 53, riding on cam 76, when the folding-knife147 comes up and tucks the sheet in between the foldingrollers 132 and137. The tapes 131 and 136 then take the sheet thus folded lengthwiseand run it out until it gets over the foldingrollers 121 and 122, whenthe folding-blade 153 comes downI and tucks it in between the rollers121 and 122, and thus causes the second or transverse fold to be made.The sheet twice folded is delivered from the rollers 121 and 122 infront of the fly 155, by which it is deposited on the flyboard 159,carried in brackets 160 and 161, attached to the stand-2 and to theframe 111. The sheets so folded are then taken from the fly-board 159for delivery to carriers or to a second folding-machine to receiveadditional folds; or addi- IOO tional folding mechanism may be connectedl to the machine, and the sheets be thence iinally delivered ready formailing. After the tapes 108 have delivered the layer of sheets to thebridge-fingers 116 said tapes pass around pulleys 72 and 89 and backaround the roll of half-printed papers which are being fed out, and soto the shaft 103, upon which they are rewound ready for future use.

In order that the shaft 103 may take up the tapes as fast as they comefrom the roll 110, a tightener-pulley 162 is used. The pulley 162 runson an arm 163, which may be fastened to the stand 24 in any desiredposition,

IIO

so as to give the belt 107 the required tension,

as shown in Fig. 3 and by dotted lines vin Fig. 4.

The inking apparatus is not shown, except the form-rollers 164, Fig. 1,as not essential to this invention.

From Fig. 1 it will be readily understood that my invention includes adouble-ender machine, that there are two rolls of blank paper from whichpartially-severed sheets of paper are alternately fed to the cylinder21, which thus prints a sheet on one side at each stroke of the bed ineach direction, and said machine being a self-feeder in printing bothsides of the sheet, my invention provides machines not limited by theability of the attendants to feed the sheets, and which, beingequilibrated in all reciprocating and oscillating movenients,"may be runat high speeds.

Haviug'thus "fully described my improvements, as of my invention I'claim- 1. In a double acting printing -machine printing from flatforms, the combination ofY an oscillating impression-cylinder, as 21,with a delivery mechanism for delivering the sheets when printed on therst side into a stepped or layered roll'of sheets, consisting,r ofcylinder 43, stripper-fingers 46, sprocket-pulleys 54 and 56, belts 48,grippers 49, bridgeiingers 68, pressure-pulleys 75, pulleys 72 and 7 3,chain 90, chain-Wheels 71 and 88, tapes 108 and'109, rolls of tapes 104,pulleys 89 and 92, and collecting-roll 110, substantially as and for theVpurposes set forth.

2. In a double acting printing machine printing from fiat forms, incombination with an oscillating impression-cylinder, as 2l, and adelivery mechanism, substantially as described, for delivering thesheets when printed on` the first side into a stepped or layered rollofsheets, bridge-fingers 116, feeding-rollers 27 29, bridge-fingers 41,and folding delivery mechanism, substantially as described, whereby saidsheetsare redelivered to said-iinpression-cylinder to be printed ontheir' second sides, and thence delivered perfected and folded,substantially as and for the purposes set forth.

3. In a printing-machine, mechanism consisting 'of the following-namedelements in combination: sprocket-pulley 54,'running on shaft 55,sprocket-pulley 56, running on collars 57, secured to fixed shaft 58,belts 48, grippers 49, springs 50, spindles 51,1evers 52, and rollers53, driven fromy the impressioncylinder 21 by gears 22, 45, and 59,bridgefingers 68, cam 76,pressurepulleys 75 on arms 74, running onpulleys 7 3, secured with pulleys 72 to shaft 70, running in arms 69,secured to 'shaft 58, journaled in stands 23 and 24, chain-Wheels 7 `land 88, belt 90, tapes 108 and 109, pressure-pulleys 92 on shaft 91andtape-pulleys 89 on power-shaft 87, power-gear 99, friction device 101,hand-screw 102,`shaft 100, carrying winding-tapes 108 and partlyprintedsheets, shaft 103, carrying rolls of tapes 104, belt 107, and pulleys105 106, all arranged and combined substantially as described, wherebythe sheets are delivered into a stepped or layered roll when printed Vonone side, preparatory to being automatically fed tothe machine again forprinting the second side, substantially as set forth.

4. In a printing-machine, mechanism consistingof the following-namedelements in combination shaft 100, having thereon sheets layered orstepped, substantially as described, forming a roll 110, pulleys 89 on apower-shaft 87 pressure-pulleys 92 onashaft 91, tapes 108 `and 109,chain-wheel 88, chain 90, chain-wheel 7l 'and pulleys 72 and 731,secured to a shaft 7 0, journaled in`arms'69,fast cned to shaft'58,located so that said tapes ,108 and 109 will'cause the sheets to bede'-livered upon the bridge-fingers 116,'feedingrollers 27 on shaft 28,power feeding-cylinder 29, and bridge-lingers 41, whereby the sheets areautomatically unwound from said layered roll, and thence automaticallyfed to be printed,substantially as and fort-he purposes set forth.

48, grippers 49, springs 50,'s`pindles 51, levers 52, and rollers 53,driven from the impression-cylinder 21 by gears V22, 45, and 59,bridge-fingers 68, cam 7G, pressure-pulleys 75 on arms 74, ruiming onpulleys 73, secured with pulleys 72 to shaft 70, running in arms 69,secured to shaft 58, journaled in stands `23 and 24, chain-Wheels71 and88, belt 90, tapes 108 and 109,7pressure-pulleys '92 on shaft 91 andtape-pulleys 89 on power-shaft 87, powergear 99, friction device 101,hand-screw'102,V shaft V100, carrying tapes 108 and partlyprintedsheets, shaft 103, carrying rolls of tapes 104, belt 107, and pulleys105 106, all arranged and combined substantially as described, Wherebythe sheetsare cut from the web, fed to said impression-cylinder 21,printed on V, their first side, and delivered intoa stepped or layeredroll preparatory to beingv automatically fed to the machine again forprinting the second side, substantially as and for the purposes setforth.

6.'In a printing-machine, in combination with a shaft 58, journaled instands 23 24,. and arms 61, secured, as described, by a handscrew 60,arms 69, shaft 7 0, pulleys 72 73, chainwheels 71, belt 9 0,andcore-shaft 100, where-A by the path of the sheets firstv passed tosaid core-shaft maybe easilynand quickly changed to allowV said sheetsto return by the same track, but diverted so as to be a second timeprinted, substantiallyas and for the purposes set forth.

JOHN T: HAWKINS.. Witnesses:

JOHN TULLY, FRANCIS R. REILLY,

